Tabulating machine



y 1931. F. M. CARROLL 1,803,959

TABULATING V MACHINE Original Filed t- 21. 19125 11 Sheets-Sheet 1 y 5, 1931. F. M. CARROLL 1,803,959

TABULATING MACHINE Original Filed Oct. 21, 1925. ll Sheets-Sheet 2 OQOOQQQOO anvem boz y 5, 1931. F. M. CARROLL TABULATING MACHINE Original Filed 1925. ll. Sheets-Sheet 3 ll-llllllll lllllllllll ||I Illllll|m:

ilmllllllll M Li M w *T [2 3 ww NOW QOMW Wh m y 1931. F. M. CARROLL 1,803,959

TABULATING MACHINE Original Filed Oct. 21, 1925 11 Sheets-Sheet 4 May 5, 1931.

F. M. CARROLL TABULATING MACHINE Original Filed Oct. 21, 1925 ll Sheets-Sheet 5 A j 3M name! May 5, 1931. F. M. CARROLL TABULATING MACHINE Original Filed Oct. 21, 1925 11 Sheets-Sheet 6 May 5, 1931. F. M. CARROLL TABULATING MACHINE Original Filed 1925 ll Sheets-Sheet 7 Nwm avwavitoz M Pk M May 5, 1931.

F. M. CARROLL 1,803,959

TABULAT ING MACHINE Original Filed Oct. 21, 1925 ll Sheets-Sheet 8 m R m N May 5, 1931. F. M. CARROLL TABULATING MACHINE Original Filec1 1925 11 Sheets-Sheet 9 obN HWM di v mm; O 92 W Nu o k vm.

nvcnfo y 5, 1931- F. M. CARROLL TABULATING MACHINE Original Filed Oct. 21, 1925 ll Sheets-Sheet l0 wvw III

A) flbtome y 1931. F. M. CARROLL 1,803,959

TABULATING MACHINE Original Filed Oct. 21, 1925 1,1 Sheets-Sheet 11 Swuemfoz MkM Patented May 5, 1931 UNITED STATES PATENT OFFICE FRED M. CARROLL, OF YONKER S, NEW YORK, ASSIGNOR TO THE TAB'ULATING MACHINE COMPANY, OF ENDICOTT, NEW YORK, A CORPORATION OF NEW JERSEY TABULATING MACHINE Application filed October 21, 1925. Serial No. 63,826.

This invention pertains to record-controlled tabulating machines and comprises an accumulator suitable for use in connection with the drum printer disclosed in my Patent No. 1,516,079, issued November 18, 1924, which discloses a drum printer designed for listing (printing) only, and without provision for. either accumulating or printing totals.

One object of the present invention is to combine the above high speed drum printer with accumulator devices capable of also operating at high speed, and arranged in such manner as to line up with the type which are spaced approximately 1; inch apart on the drum.

Another object of my invention is to provide novel means for printing the amount standing on any accumulator element, the

printing being effected while the accumulator is being reset to zero without the use of a separate resetting shaft, or motor, and without the use of the usual total taking cams and feeler contacts, and in a manner that 5 permits the printing to be done without slowing down or stopping the machine.

Another object of the invention is the building of the accumulator elements in units of one element each, each unit being exactly similar to every other unit and being readily removable or insertible in the machine so that any unit may be easily replaced by another unit should occasion require it.

Further and other objects and advantages will be hereinafter set forth in the accompanying specifications and claims and shown in the drawings, which by way of illustration show what is now considered to be thepreferred embodiment of my invention.

In general my machine comprises a plurality of inclined shafts in a vertical plane parallel to the drum shaft and below the drum. Each shaft has arranged along its length a plurality of accumulator units or elements. The shafts are inclined sufficiently so that the accumulator units on each shaft are progressively offset to bring each unit directly underneath a type bar on the drum. Although each accumulator unit is much wider than the inch space between type bars this arrangement permits the installation of an accumulator unit aligned with each type without exceeding the space limit set by the length of the printing drum. In the particular embodiment of my invention herein shown there are nine accumulator units on each vertical shaft which permits each unit to be nine times the width of a type space or 1% inches. Most record cards used in tabulating machines have forty-five index columns. Therefore my printing drum is provided with forty-five circumferential sets of type bars. With nine accumulator units 'on each vertical shaft five shafts are required to provide each ring of type with a coordinated accumulator unit.

With such an arrangement of counters, especially operating at high speed, it is practically impossible to effect mechanical transferring from one wheel to the next, so I use the electric transfer devices of C. D. Lake Patent No. 1,372,965, which enable me to transfer, or carry, from any accumulator element to the next, regardless of the fact that they may be on separate shafts, and to transfer at very high speed.

As my accumulator elements are not arranged in predetermined sets it is not necessary that any particular element be used for the units order, but, if desired, any wheel may be used for units regardless of its location, in which case the tens, hundreds, thousands and succeeding ordersof digits will usually be stepped 'along on the succeeding elements to the left. However, it is not necessary that succeeding elements be used for succeeding orders of digits because, as will later appear, I can skip one or more elements so that, for instance, if the units element is in the third column the tens wheel is not necessarily in the fourth column, but may be in the fourth or fifth, or any desired column to the left of the units element. This is accompanied by the use of the invention disclosed in the patent to James lV. Bryce, No. 1,723,499, issued August 8, 1929, which is an improvement in the Lake patent above referred to.

Another object of this invention is to pro vide a universal split accumulator s stem for tabulating machines. Heretofore in devices of this character, several independent banks of accumulator elements have been employed. I Thus in a device having a capacity of forty-five columns the corresponding forty-five accumulator wheels or units have usually been divided into five banks of nine wheelseach. In other words, the fortyfive units are split at four points mechanically and functionally and these points are fixed. The units may, if desired, be built into a greater number of smaller banks, but there will still be fixed division points between the banks. Moreover, if the units were to be divided into (say) nine banks of five units each they could not be used for figures having more t an five digits. If dollars and cents were to be accumulated, two units would be required for the cents, leaving but three for the dollars so that the accumulation could not extend beyond the hundreds. Of course some large and some small banks might be used but the flexibility of the system would still be limited. I

According to my invention, each of the accumulator wheels or units is functionally disconnected from the others and may operate independently. On the other hand, any unit may be connected with any number of other units to operate as an accumulator bank. All of the units may be variously connected at the will of the operator to constitute as many banks of varying capacity as desired.

The columns of index points on the perforated record cards are generally divided into fields. Each field comprises one or more columns. The perforation sensing brushes that act upon the columns are thus theoretically divided into groups, each group representing one of the card fields. These brushes may then be connected to a group of type members which will print upon a sheet the data taken from the specific field of the perforated card. If the data represents statistics that are to be accumulated from several cards before being printed, the brushes are connected to an accumulator bank which in turn is. connected to the type members for controlling the printing. If the field on the perforated card comprises three index columns, three type bars may be employed, or when accumulating, a fourth type bar may be employed to provide for overflow. -'But an entire bank of nine accumulator units must be used, five of the units of which are thus idle and cannot be used in connection with another field of index columns. If the card were to be divided into a large number of small fields the tabulating machine would have to possess an equally larger number of banks of accumulators. This would increase the size arid, cost of the machine.

According to my invention, where a field on the perforated card requires but four accumulator units, only four need be connected with that field; and all of the other units are still available for connection with other fields. Thus, a limited number of accumulator units may serve for a large number of fields on the perforated cards.

, It will readily be seen that one bank of forty-five units adapted to be thus universally .split has a far wider range of usefulness than five banks of nine units each.

In the drawings,

Fig. 1 is a side view, partly in section showing the general arrangement of accumulators, printing devices and the connection therebetween. Fig. 2 is a view taken from the left of Fig. 1 showing the cam shaft across the top, the upper portion of one of the inclined accumulator shafts together with three of the nine accumulators associated with it, and the vertical call wire actuated by the accumulators.

Fig. 8 is a side view of one of the accumulator units together with a portion of its drive shaft.

Fig. 4 is a section on line 4.4 of Fig. 3 showing principally the arrangement of mechanism on the accumulator unit shaft.

Fig. 5 is a side view of an accumulator unit taken on line*55 of Fig. 3.

Figs. 6, 7, 8 and 9 show different positions of the transfer or carrying devices looking upward on line 6-6 of Fig. 3. This View shows a dotted outline of the accumulator unit and its position with relation to the drive shaft.

Fig. 10 is a sectional view looking upwards on line 10-10 of Fig. 3.

Fig. 11 shows one of the individual total taking cams and its associated contacts on line 1111 of Fig. 2.

Fig. 12 shows the camand contacts controlling the total taking magnets on line 12-12 of Fig. 2.

Fig. 13 is a detail view of devices associated with the total taking magnet.

Fig. 14 is a detail view of part of the mechanism shown in- Fig. 10.

Fig. 15 shows some of the devices of Fig. 5

in different position.

Fig. 16 shows the total printing clutch and its control magnet taken on line 1616 of Fig. 2.

Fig. 17 shows some of the devices of Fig. 5 in different position.

Fig. 18 is a view showing details of connection between accumulator unit and printing devices.

Fig. 19 is a wiring diagram of the electric circuits-of the invention.

Fig. 20 is a modified wiring diagramof the electric circuits showing features not shown in Fig. 19.

The general scheme of my invention can best be understood from Figs. 2 and 18. In Fig. 18 the accumulator unit 50 at the lower left by means of vertical call wire 52 and hori- Leas es Z'ontal push rod 54L- actuates the printing device at the upper right listing items and printing totals as will be explained later.

The preferred form of my'machine is designed for use with record cards having fortyfive index columns so I provide forty-five accumulator units 50 and the same number of circumferential sets of type on the printing drum, each accumulator unit being coordinated with one ring of type as in Fig. 2, which shows one of the inclined accumulator drive shafts 56 and three of the nine accumulator units driven by that shaft. It will be noted that the call wires 52 are of progressively increasing lengths from left to right and that each call wire is connected to the actuating lever 58 of an accumulator unit 50. The inclination of shaft 56 is such that the above arrangement spaces the call wires exactly the same distance apart as the type on the printing drum and there is therefore a straight line transmission from each unit arm 58 to its correlated type.

' I have shown only one accumulator shaft and three of the accumulator units on that shaft but it will be understood that there are in the machine five accumulator shafts with nine accumulator units oiieach the other four banks f units being assembled to the right of the bank shown, each with its shaft, and so spaced that the spaces between the last call wire of each bank and the first call wire of the next bank is the same as the spaces between the individual units of each bank.

The fact that the units are arranged in banks of nine has no special significance. The arrangement of nine per bank is for mechanical convenience only in order to bring each unit in line with its type and keep within reasonable dimensions. The functional relationship of the accumulator units to each other is exactly the same as if they were in a single horizontal bank of forty-five units.

From the side view in Fig. 1 it will be noted that each accumulator unit 50 is in an individual frame together with its magnets, and may be removed or replaced as a unit. Each unitis secured to the main frame 60 by screws, not shown, and the electric wires are connected-ito terminals 62. The manner in which the drive shaft 56 passes through the units will be understood from Fig. 6 in which the dotted outline shows the form of the accumulator unit.

My printing device is fully described in the patent above referred to but a knowledge of its operation sufficientfor an understandin g of the present invention may he obtained from Figs. 1 and 18. Drum (i l carries fortytire circumferential sets of type bars one of type for ea h cart column. There are type in each set one representing each set i. in

4 i 1 digit corresponding to the same index; position in the record card column.

Asthe drum rotates in the direction indr cated by the arrow the type bars pass the printing position in the same order and at the same speed as the index positions on the card pass the analyzing brushes. If a brush finds a perforation at an index position contact will be made, an accumulator element will be actuated and at the same instant the digit represented by the perforation will be printed on the record sheet as will be explained.

'l he mechanism by which each accumulator element controls its set of type bars is shown in Fig. 18. Each circumferential set of type is provided with a hook memberbti pivoted at 68 and pressed anticlockwise by spring 70. 'l'he right hand end of member (56 has a hooked end 72 adapted when depressed to engage the tail M- of type bar 65. The drum is rotating clockwise. Each type bar 65 is provided with a cam us rotatable on a shaft [8 to hold the type bar locked in a tangential position except at the instant the type bar is passing the printing position. if at that instant hook 72 engages the tail of the bar the bar will be rotated rapidly counterclockwise and the type carried on the outer end of the bar will impact against ribbon 78 and print on record sheet 80 carried by platen 82. Each type bar is released by its cam as the bar passes the printing position and whether or not it is actuated to print it is again locked by its cani as soon as the printing position is passed. Each hook member 66 is actuated by its correlated accumulator element 50 by means of vertical call wire 52 and horizontal push rod 5-1 in connection with other devices which will now be described. The normal position of the parts is shown in Fig. 1. The lower end of latch dog St is on top of extension 86 of hook member 66 which is thereby kept out of engagement with the type bars (35. Pushing upwardly against the under side of shoulder 88 of member 66 is the collar 90 mounted on vertical spring rod 92 pressed upwardly by spring 9% through the agency of bell crank 96, there being one spring rod 92, spring and bell crank 96 for each member 66, the rods 92 being of differential lengths and each resting on top of its individual bell crank 96. Latch dog 8% is held in normal position by spring 98 which draws the upper end of dog 84: to the left against push rod 54, the other end of which abuts against the downwardly extending arm 100 of hell crank 102 pivoted in the frame at 104. The normal position of arm NO is against stop 106 where it is held by spring 168,. Horizontal arm 110 of hell crank has depending from it call wire 52 passing through arm 58 and having a collar 1153 so adjusted that downward movement of 58 will draw down wire 32 which through hell crank 102 pushes rod aicu Hi W: .x. 3

the 1 1 a eieoy moving dog 8ato toe p ioi iii m l8 of Hit a i 1,. a l m m I Q iiiGBlDQl or role allows nieinbei to to no pushed upwardly by collar 90 on rod 92 whereupon hook 72 actuates the particular type bar at that instant passing the printing position, as already described. As soon as a type bar has been actuated by hook 72 one lobe of rotating cam 114 pushes the upper end of wire 92 to the left sufficiently for collar 90 to release shoulder 88 whereupon member 66 is instantly restored to normal position by spring 7 0 thereby moving hook 72 out of the path of succeeding type bars. At the end of each card cycle bail 116 is rocked downwardly restoring all wires 92 to normal lowered position, in which position spring rods 92 straighten themselves and collars 90 resume their positions under shoulders 88. This completes the printing operation which was initiated by the depression of arm 58 of the accumulator unit. The accumulator unit will now be described.

The method of furnishing power to the units may be understood by reference to Figs. 3 and 4. Fast on shaft 56 is a gear 120 in mesh with gear 122 pinned to accumulator shaft 124 which therefore runs constantly while the machine is in operation making one revolution for each card cycle. Pinned to shaft 124 is a cam collar 126 and a cam 128. Mounted on an idler shaft parallel to shaft 124 is a sleeve 130 having fast to its upper end a gear 132 in mesh with gear 122 and on its lower end a gear 134 in mesh with a gear 136 integral with clutch member 138 which is slidably mounted on shaft 124 and on the outer surface of collar 126, the teeth of gear 134 being wide enough to permit gears 136 and 134 to remain in mesh even when member 138 is shifted. Mounted for rotation on shaft 124 is sleeve 140 provided at its upper end with teeth 142 suitable for engagement by corresponding teeth on the under side of member 138, and provided also near its upper end with a flange bearing on its under side another set of teeth 144. Sleeve 140 is held from rotation except when turned by member 138. Sleeve 140 corresponds to the number bearing wheel found in ordinary accumulators except that it is not provided with numbers for visual reading. However, it may be so provided if desired.

The train of gears from 120 to 136 is so proportioned that each tooth 142 corresponds to an index position on the record card and while sleeve 140 is engaged by clutch member 138 it rotates one tooth space for each card index position. There are ten digit positions on the card and twenty teeth 142 so while the ten digit positions on the card'are passing the brush sleeve 140 will make half a revolution provided it .is engaged by clutch 138 during that time.

Each accumulator unit has a listing magnet 146 and a total printing magnet 148. Magnet 146 has an armature 150 and magnet 148 has an armature 152. both armatures being pivoted on the frame at 154. In normal position both armatures are kept away from their magnets by compression spring 156 extending from one armature to the other. Pivoted at 158 is a member 160 having an up standing arm 162 normally engaged by hook arm 164 of armature 150 as in Fig. 5. Member 160 has also a horizontal arm 166 and an upwardly curved arm 168. Arm 166 has a projecting lip 170 engaging a circumferential groove 172 in member 138. Pivoted on 160 at 174 is an arm 176 normally held by spring 178 against lip 180 of member 160 (Fig. 17). Member 160 with its attendant parts is constantly urged clockwise by flat spring 182 anchored at 184, fulcrumed adjustably at 186 and bearing against lip 180. Vhenever the analyzing brush finds a perforation in the card column to which the accumulator element is correlated an impulse is sent through listing magnet 146 and its armature is actuated whereupon hook 164 releases upstanding arm 162, member 160 is rotated clockwise by spring 182, the teeth on clutch member 138 engagezthe teeth 142 on sleeve 140 thereby rotating sleeve 140 until the end of the card cycle when cam 188 on collar 126 engages curved arm 168 of member 160 thereby disengaging the clutch and permitting the parts to again be retained in normal position by hook 164 engaging arm 162. Fig. 17 shows the position of the parts while the clutch is engaged and sleeve 140 being rotated as in the well known Hollerith accumulator the clutch is engaged at differential times in the card cycle depending on the location of the perforation that energizes the clutch magnet so sleeve 140 is rotated a fraction of a revolution proportionate to the value of the digit represented by the perforation in the card.

lVhen the clutch is disengaged and memher 160 raised to normal position the outer end of arm 17 6 engages a notch 144 in sleeve 140 to prevent it from rotation until the clutch is again engaged at which time arm 176 is free from notches 144. Spring 178 provides a yieldable connection between members 160 and 176. Therefore 160 is not prevented from returning to normal position promptly even though arm 176 should momentarily rest on top of a tooth 144.

Arm 58 is pivoted on the frame at 190 havino astop projection 192 normally in contact with the frame above it. Pivoted on arm 58 near its middle is a bell crank with its horizontal member 194 normally held in resilient contact with arm 58 by spring 196. The downwardly extending vertical arm 198 of the bell crank passes through a slot in the outer end of member 160 and by means of a hooked lower end 200 engages the under side of 160 so that normally arm 198 and horizontal arm 58 more up and down in unison with arm 166 of member 160. This means that whenever 160 is released by the energization of magnet 146, call wire 52 is depressed at the same instant clutch 138 is engaged, thereby printing on the record sheet, as already described, the same digit recorded by the differential rotation of sleeve 140.

I have explained how amounts taken from the cards are listed and how they are set up in the accumulator and shall now explain how the amounts'standing on the accumiv lat-ors (totals) are printed.

In machines of this character there are several methods of initiating the taking of totals. It may be done by manually pressing a total taking key, or the machine may do it automatically when card groups change. or it may be done by stop cards inserted between the card groups. My present invention is suitable for use with any known method of initiating the taking of totals, but for purpose of illustration I have chosen to describe it in connection with the stop card method, as set forth in my patent above referred to.

The method of initiating and taking totals may best be understood by first referring to the diagram 19) which is largely a duplicate of the diagram in the above patent.

Shaft 202 actuates the paper feed mechanism and when a total is to be taken the shaft is turned by a ratchet device in order to provide a blank space on the record sheet before the total is printed.

In the present invention shaft 202 is provided with a cam 204 which during the preliminary paper fee-ding movement abovereferred to closes contact 206 and energizes magnet 208 (Figs. 2. 16. 19). actuating armature 210 and releasing dog 212. Dog 212 is pivoted on disc 214 and when released engages lug 216 secured to shaft 218. thereby causing sleeve 214 to revolve with shaft 218 for one revolution at the end of which dog 212 is again thrown out and held out of engagement with lug 216. magnet 208 being then deenergized. The above described device is a familiar type of one revolution clutch.

Secured to disc 214 and surrounding shaft 218 is a sleeve 220 carrying a pluralitv of contact cams 222 one for each accumulator element, and a single cam 224. all of which. make one revolution during the total taking operation. The timing of the cams is such that when thev begin to turn cam 224 first closes contact 226 and holds it closed during most of the revolution. Closure of contact 226 establishes a circuit through all total-taking magnets 148 by way of line 228. line 230, magnet 148. line 232, contact 226 and line 234.

At a later instant in the revolution all cams 222 simultaneously make all contacts 236 and immediately break them again. Details of above cams and contacts are shown in Figs. 11 and 12. The making of contacts 236 energizes all counter magnets 146, current flowing through line 228, line 238, contacts 236, line 240. line 242, magnet 146, line 244, and back to the other side through line 246.

When magnet 148 is energized it actuates armature 152 and arm 248 attached thereto engages a notch in frame 250 and slides it downwardly on vertical rod 252 until frame 250'assun1es the position in Fig. 15. Mount ed in frame 250 is a vertical rod 254 on which is a slidable sleeve 256, urged donwwardly by spring 258. and bearing on its lower end the arm 260 which passes through a notch in frame 250 in such manner as to be restrained from lateral movement but free to slide vertically in the notch. The upper end of frame 250 has an extension 262 located directly above the rear end of hell crank arm 194. and projecting from the side of frame 250 is an arm 264 so located as to engage at the proper time upstanding arm 162 of member 160 and downwardly extending arm 266 of arm 58. Integral with upper flange of sleeve 140 are two cams 268. one corresponding to each of the two zero positions of the sleeve.

\Vhen the frame 250 is pushed downwardly by arm 248 upon the energization of magnet 148 arm 260 is placed in the path of cam 268 and arm 194 is loweredthereby moving arm 198 to the right and unlatching hook 200 from horizontal arm 166 of member 160. This unlatehing of hook 200 prevents actuation of arm 58 when clutch 138 is thrown in during total taking.

Immediately after frame 250 has been shifted as above by the energization of magnet 148 an impulse is sent through magnet 146 by cam 222 thereby releasing member 160 and permitting it to-be rocked by spring 182 to engage clutch 138 with sleeve 140, and cause the sleeve to rotate it.

Rotation of sleeve 140 continues until cam 268 contacts with arm 260 whereupon frame 250 is rocked about its supporting rod 252 resulting in arm 264 contacting with arms 266 and 162. pushing them both to the left (Fig. 15). The pushing of arm 266 to the left moves arm 58 downwardly thereby actuating call wire 52 and printing, while the pushing of arm 162 to the left rocksmember 160 counterclockwise and disengages clutch 138 from sleeve 140 leaving the latter standing at zero position.

When frame 250 is pushed downwards,.if cam 268 is in zero position. arm 260 will contact with the'top edge of the cam and be thereby prevented from assuming its lowered position. Should this occur spring 258 will compress and arm 260 with its sleeve 256 will remain in elevated position until the sleeve.

140 rotates to the next position whereupon arm 260 will drop into position to be actuated when the other cam. 268 contacts with it.

. 9 type is approaching printing position, and

the other type wire approach the printing position in the regular order 8, 7, 6, 5. 4, 8, 2, 1 and 0 while the digit positions of sleeve turn in the same order. Sleeve 140 is turned in the same direction it was turned to set up the digit standing on it and the above described devices will insure the printing of that particular digit, as may best be shown by taking some concrete examples. If the position of sleeve 140 represents 9. sleeve 140 will turn one digit position before the clutch is disengaged and the call wire actuated by cam 268. During this interval of time the printing drum has brought the 9 type in printing position so it is actuated as cam 268 contacts with arm 260. If digit 7 were standing on sleeve 140 the sleeve would move three digit positions before cam 268 actuates call wire 52, and during that time the printing drum will also have moved through three digit spaces and the 7 type will do the printing. Thus the printing devices will print each digit standing on the accumulator element and will leave the element at Zero position thus automatically clearing the accumulator preparatory to another operation.

The transfer devices used in my invention are fully disclosed in Lake Patent No. 1,372,965, granted March 29, 192i, and in the patent to Bryce No. 1,723.499 issued August 8, 1929, but I shall describe them here sufficiently so that the operation of my invention may be fully understood.

Each accumulator element sleeve 140 has on its lower end a flange 270 (Figs. 4. 6. 7. 8 and 9) having at each of two diametrically opposite points a pair of cam lobes of two different heights 272 and 274 respectively. Pivoted at 276 is an arm 278 having a spring 280 which keeps the nose 282 of arm 278 in contact with cam disc 270. lVhile 282 rests on the concentric portion of cam 270 lever 278 is not affected, but when the sleeve 140 registers 9, raised portion 272 comes under 282 and tacts 290 and 292, respectively. The contact ends of the spring blades are insulated from the bodies of the blades, which in turn are insulated from the frame and from each other. To the left of blades 290 and 292 are the controlling pins 294 and 296, respectively, carried by a member 298 pivoted at 300 and having an arm 302 pressed against cam 304 by spring 306. Cam 128 is pinned to shaft 124 and has a concentric or normal portion, a raised portion above the normal and a depressed portion below the normal.

During each revolution of shaft 124 the concentric portion of cam 128 retains the controlling pins in normal position while the adding portion of the cycle is being effected, after which arm 302 contacts with the low part of the cam and the pins move to the left to effect the transfer or carry over. Then the high part of the cam moves the pins to the right beyond. normal position to allow stepped arm 278 to return to normal position. as in Fig. 6, with blade 290 resting on step 284 and blade 292 on step 288. Finally the arm resumes normal position on the concentric portion of cam 128. During each half revolution of the register sleeve 140 the stepped arm 278 is shifted from its normal to two other positions to the left. By its movement into the first of these positions contact 290 is released frm step 284, and by its second movement the contact 292 is unlatched from step 288.

Normally the contacts 290 and 292 occupy the positions shown in Fig. 6, with contact 292 resting well on step 288 and contact 290 resting a lesser distance on step 284. As the register sleeve 140 turns and indicates 9, lobe 272 of the cam comes under 282, whereupon plate 278 being shifted unlatches contact 290 and permits it to drop onto pin 294 which is in normal position. The parts are then in the position shown in Fig. 7 so long as member 298 is not moved as it will not be during the adding part of the cycle. If by the further movement of one digit space of the register sleeve the digit 0 is indicated then the highlobe 274 of the cam shifts arm 278 another step to the right and unlatches contact 292 from step 288 so that both contacts 290 and 292 rest against their controlling pins 294 and 296 respectively. as shown in Fig. 8.

Figs. 7 and 8 illustrate the end of the adding portion of the cycle. the register sleeve in Fig. 7 indicating 9 and in Fig. 8 indicating 0.

In addition to the contacts already described there is a stationary contact 308 connected to a common bar and so placed that contact- 292 may contact with 308 under certain conditions.

It will be seen that if pins 292 and 290 be moved to the left in Fig. 7, contacts 290 and 292 will close. contacts 292 and 308 being kept out of contact by step 288. In Fig. 8 if the ccntmlling pins be moved to the left contacts incense 7 292 and 308 will close, while contacts 290 and 292 are kept apart by the middle step 2% (Fig. 0). In other words, when the controlling members 298 in all the accumulator units are moved to the left simultaneously contacts 292 and 308 will close in all cases involving transfer while contacts 290 and 292 close in all cases when their wheels indicate nines. Assuming that the adding operation has been completed and the clutches thrown out by restoring cam 188 acting on hook arm 168 (Fig. 5) the carrying operation may be understood referring to diagram Fig. 19. In Fig. 19 the upper set of contacts represents units, the middle set tens and the bottom set hundreds. T he units set has no need for the 290 contact so it is not shown.

Assume that the number originally standing on the accumulator was 99 and that one unitwas added. 1 he adding of 1 the units (upper) element turned that element to zero and set its contacts as in Fig. 8 so when 302 dropped onto the low part of cam 128 during the carrying operation contacts 292 and 2308 closed as in Fig. 9. At the same time the tens element, registering 9, had its contacts 290 and 292 closed. its the hundreds element registered neither 9 or 0 all its contacts remained open. With cont-acts set as above transfer contact 310 is closed by cam 312 pinned to shaft 218 which makes one revolution every card cycle and circuits are established as follows: line 314, transfer contact 310, line 0, contact blades 308 and 292 of units set. (in issuing from blade 292 the current divides, part passing to magnet 146 of the tens element. by way of wire 318, Wire 242, magnet 14-6, wire 24% and back to the other side of line through 246 thus energizing the tens magnet. The other partof the current from upper 292 follows wire 320, contacts 290 and. 292 of the tens element, wire 322, wire 242. hundreds magnet 14:6, wire 244-, and return through 2&6 thus energizing the hundreds ma gn'et.

When the tens and hundreds magnets are energized as above their clutches 138 are thrown in and their register sleeves 140 are advanced one'digzit space, so we now have 0 on the units element. 0 on the tens element and 1 on the hundreds element. After advancing one digitspace all clutches are thrown out by the transfer restoring cam 32 t (Fig. 5) in the same manner as they are thrown out by earns 188 after the adding operation.

lln Fig. 19 it will be understood that 32 is record card aboutto pass dov-snwardly between the analyzing brushes 328 and contact blocks 330, Whenever contact is made through a hole in the card a. circuit is established from left side of line through wire 332 and the various contacts and circuits in the right, hand portion oat the diagram as fully set forth in my patent above referred to, finally passing through wire 334, brush 328, contact block 330, wire 336 wire 242, accumulator magnet 146, wire 244 and to the right side of line by wire 24-.6.

3&0 represents the motor that operates the machine by the train of gears shown in Fig. 1, driving the printing drum, cam shaft 218 and accumulator shaft 56 in unison so that each makes one revolution per card cycle.

Magnet 84:2 (Figs. 1 and 19) actuates the paper teed and its operation is fully described in the above mentioned patent.

T he diagram in Fig. shows some features of the invention that could not conveniently be shown in Fig". 19-. For convenience of de scription the individual accumulator units are designated by letters A, B, C. D, ld and F. A plughoard 344i is provided in which are set various plug sockets which permit the operator to conveniently interconnect the various units to secure the results he desires.

Connected to each magnet 146 by wire is a triple plug soclzet 348. Each contact blade 292 is connected by wire 350 to a double socket 352. while each contact blade 290 a socket 354 to which it is connected by wire 356. Each brush wire 336 leads to a socket 358 and each total taking wire 2&0 leads to a socket 360.

The connections shown between units A, B f} are such as enable those three units to function as a complete accumulator bank, A and B being connected through their sockets 358 to two contact brushes to receive entries om perforations in the cards. U nit C is not wired to a brush so receives no items direct from cards but is simply an overflow unit to receive and'print any digit carried over from unit B. will be noted that transfer contact blade 292 of unit A is connect-ed by wire 362 to magnet 146 of unit B, and by wire 36 1 to blade 292 of unitl3. These are the same connections shown in Fig. 19. Similar connections are made between units B and C. v it is evident that the above connections provide an accumulator bank assembled at the will of the operator from adjacent accumulator units, also that a bank of any nun ber of units may be assembled in a similar manner, and that any number of banks of any number of units may be set up within the capacity of the machine. it is also evident that each assembled bank mav be in any location and that it may be adjacent to other banlrs or may be isolated from them by inactive accumulator units. The individual units of each bark are so interconnected among themselves that all transfer or carrying operations are properly carried out.

lt is sometimes desirableto print on the record sheet a number comprising several dig;- its but with an extra wide space between two of the digits, even though they are in adjacent columns on the card. This is provided for as shown in the accumulator bank comprising, units D, E and F.

Sockets 358 at D and E units are wired to adjoining brushes 328 and normally digits would be printed on the record sheet by the adjoining type controlled by units D and E. However, it is desired to print the digits with an extra space between them. This is accomplished by wiring from socket 358 of E unit to one of the sockets 348 of F unit, so that items normally entered in E unit will be entered in F unit. Total taking socket 360 of E unit is wired to a socket 348 of F unit so that totals are taken from F unit instead of E unit. Also, transfer control wires 362 and 364 which would normally go from sockets 352 of D unit to sockets 348 and 354: of E unit are connected instead to the corresponding sockets of unit F. As a result of these connections unit E is dead, all opera" tions normally carried out by E unit being handled by F unit, and the digit printed by F unit will be spaced from the D digit by the width of the inactive type connected to the E unit. Units D and F comprise a complete accumulator bank of two units, performing all operations of any accumulator bank but printing their respective digits with a space between them. It is evident that any desired number of units may be bridged as described and a corresponding space left between printed digits.

It is possible in the present invention to accumulate amounts from any card column in more than one accumulator bank at the same time by cross plugging. For instance, if it is desired to accumulate in bank comprising units D. E and F the same amounts accumulated in bank comprising A, B and C units, it may be accomplished by connecting sockets 358 from A to D, from B to E, from C to D, and then wiring D, E and F together exactly as A, l3 and C are wired together. It is evident that when wired as above the same amounts will be entered in bank comprising D. E and F as in the bank comprising A, B and C. in similar manner the same amounts may be entered in any number of banks simultaneously.

This feature provides a convenient methodof accumulating a grand total while a shecession ot sub-totals is being accumulated and printed. This is accomplished simply by disconnecting total taking wire Q lOfrom the 360 sockets of the bank on which the grand total is to be accumulated. Then when a total taking operation is carried out the other bank will be printed and cleared but the grand total bank will neither print nor clear, but will add the amounts taken from the next group of records to the amount already standing on the grand total bank.

In accordance with the provisions of the patent statutes, l have herein described the principle of operation of my invention, to-

use the various features and elements in the combinations and relations described, some of these may be altered and others omitted and some of the features of each modification may be embodied in the others without interfering with the more general results out-lined, and the invention extends to such use.

What I claim is 1. An accounting machine comprising a printing device, a plurality of accumulator wheels with transfer devices between them, a plurality of continuously rotating axially shittable actuators, adapted to be shifted into engagement with said wheels at differential times to enter items therein, means for simultaneously shifting said actuators into engagement to reset said accumulator wheels by turning them in the same direction they rotated while accumulating items, means for rendering said transfer devices ineffective during reset operations and means controlled by the accumulator wheels according to the diilerential times at which they reach their home positions after such resetting for controlling the printing of totals.

2. An accounting machine comprising, in combination, a continuously forwardly movable printing device, an accumulator device having a plurality of adding wheels with transfer devices therebetween, combined dititerential actuating and zero setting devices designed to move said wheels in the same iorward direction for receiving items and for zero setting, means for rendering the trans fer devices ineffective during zero setting and means controlled by perforations in record cards for controlling said diiierential actuating devices to enter items into said accumulator wheels and for actuating the printing device to print items.

3. In a machine of the class described an adder unit comprising an adder element and associated differential mechanism for controlling it. said diflerential mechanism including a clutch for engaging said adder element for entering items and clearing, printing means associated with said unit, and actuating means therefor, means for operating said actuating means on engagement of said clutch when entering an item into the units, and means for disabling said last named means on engagement of said clutch for clearing and for operating said actuating means on disengagement of said clutch at the end of clearing.

4. In a machine of the class described a plurality of printing devices, a plurality of reg istering units, one for each printing device. located one beneath another, with adjacent units offset by an amount equal to the spacing between printing devices and straight line transmission mechanism connecting each registering unit with its associated printing device.

5. In a machine of the class described a plurality of printing devices. a plurality of registering units, one for each printing device, each of said units comprising a registering element and individual differential mechanism for controlling it. said units located one beneath another with adjacent ones offset by an amount equal to the spacing between the printing devices, a common driving shaft for said differential mechanisms having its axis extending in a direction conforming to offsets of the units and straight line transmission mechanism connecting each registering unit with its associated printing device.

6. In a machine of the class described a plurality of removable adder units each comprising an individual supporting structure with an adder element for agiven denominational order and an individual differential mechanism for operating it mounted thereon. a common drive shaft for said differential mechanisms and means for releasably holding each unit individually in driving relationship to said shaft.

7 In a machine of the class described a plurality of denominational order adder units each comprising an individual supporting structure with an adder element and an individual differential mechanism and individual driving means for each differential mounted thereon, a common drive shaft and an individual driving element for each differential driving means mounted on said shaft.

8. In a machine of the class described a supporting frame provided with a plurality of compartments for receiving individual adder units, a common drive shaft located in proximity to said frame, a plurality of driving elements mounted on said shaft each element corresponding in position to the position of one of said compartments, a plurality of removable adder units each comprising an adder element with an individual differential mechanism for operatingit and drivingmeans for said differential mechanism adapted to cooperate with a driving element on the common shaft when the unit is placed in one of said compartments.

9. In a machine of the class described a supporting frame provided with a plurality of compartments for receiving individual adder units, a common drive shaft located in proximity tosaid frame, a plurality of gears mounted on said shaft each gear corresponding in position to the position of one of said compartments, a plurality of removable adder units each comprising an adder element with an individual differential mechanism for operating it, a separate gear train for operating the differential mechanism of each'unit, each train comprising a gear mounted in the unit and meshing with a gear on the drive shaft when the unit is placed in one of said compartments.

10. In a machine of the class described, in combination a universal split accumulating device comprising a plurality ofadding units each having an adding wheel mounted for rotation in the same direction for both adding and restoring operations, a printing device comprising a plurality of sets of type each set of type being aligned with and controlled by a particular adding unit and control means for simultaneously effecting entry of items on the adding wheels and printing of the same items on the record sheet.

11. An accounting machine comprising in combination, a continuously forwardly movable printing device, an accumulator device having a plurality of adding wheels, combined differential actuating and zero setting devices comprising forwardly rotatable axially shiftable clutches designed to move said wheels in the same forward direction for receiving items and for zero setting and means controlled by perforations in record cards for controlling said differential actuating devices to enter items into said accumulator wheels and for actuating the printing device to print items.

12. In an accounting machine, a self contained removable denominational order adding unit including an adding wheel, individual differential mechanism for driving the same for entering operations, individual means for driving the differential mechanism transfer control mechanism controlled by the adding wheel and including detachable connecting means to permit selective connection of the same to another denominational order unit and a common supporting structure individual to the adding unit for supporting the several elements.

13. In an accounting machine, a self contained denominational order adding unit including an adding wheel, individual differential mechanism for driving the same in a forward direction for both adding and restoring operations, individual means for driving the differential mechanism and a common printing call device, operable by the difierential mechanism at the initiation of an entering operation and at the termination of a restoring operation.

14. In an accounting machine, a seli contained denominational order adding unit including an adding wheel, individual differential mechanism for driving the same in a forward direction for both adding and restoring operations, individual means for driving the differential mechanism, a printing call device with means for normally operating the same at the initiation of driving connection between the differential mechanism and the adding wheel and means for dis- 

